<!DOCTYPE html>
<html>

<head>
	<meta charset="UTF-8" />
	<title>列表过滤</title>
	<script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
	<!-- 准备好一个容器-->
	<div id="root">
		<h2>人员列表</h2>
		<input type="text" placeholder="请输入名字" v-model="keyWord">
		<ul>
			<li v-for="(p,index) of filPerons" :key="index">
				{{p.name}}-{{p.age}}-{{p.sex}}
			</li>
		</ul>
	</div>

	<script type="text/javascript">
		Vue.config.productionTip = false

		//用watch实现
		//#region 
		/* new Vue({
			el:'#root',
			data:{
				keyWord:'',
				persons:[
					{id:'001',name:'马冬梅',age:19,sex:'女'},
					{id:'002',name:'周冬雨',age:20,sex:'女'},
					{id:'003',name:'周杰伦',age:21,sex:'男'},
					{id:'004',name:'温兆伦',age:22,sex:'男'}
				],
				filPerons:[]
			},
			watch:{
				keyWord:{
					immediate:true,
					handler(val){
						this.filPerons = this.persons.filter((p)=>{
							return p.name.indexOf(val) !== -1
						})
					}
				}
			}
		}) */
		//#endregion

		//用computed实现
		new Vue({
			el: '#root',
			data: {
				keyWord: '',
				persons: [
					{ id: '001', name: '马冬梅', age: 19, sex: '女' },
					{ id: '002', name: '周冬雨', age: 20, sex: '女' },
					{ id: '003', name: '周杰伦', age: 21, sex: '男' },
					{ id: '004', name: '温兆伦', age: 22, sex: '男' }
				]
			},
			computed: {
				filPerons() {
					// return this.persons.filter((p) => {
					// 	console.log(this);
					// 	/* indexOf查找字符串对应位置，如果没有查询到返回-1 */
					// 	return p.name.indexOf(this.keyWord) !== -1
					// })
					return this.persons.filter(function (p) {
						console.log(this);
						/* indexOf查找字符串对应位置，如果没有查询到返回-1 */
						return p.name.indexOf(this.keyWord) !== -1
					})
				}
			}
		}) 
	</script>

</html>